Artificial tooth and backing therefor.



H E. HALL. MMHUAL TOOTH AND BACKING THEREFOR.

APPLICAHON HLED SEPT. 8 1M5.

182,565), Patented May 9,1916.

514 vantoz (km/ g) [2". Jan

HARRY EUGENE HALL, OF SCRANI'ON, PEN'NEYLVANI! ARTIFICIAL TOOTH AND BACKING THEKEFOR.

Specification of Letters Patent.

llf'al'enteifl allay 9, 191 6.

Application filed September 8, 1915. Serial No. 49,565.

To all whom it m (1 (macro Be it known that l. linker EUGENE Plant, a citizen of the United States. residing at Se 'anton, in the county of Laehawanna and State of Penns lvania. have invented new and useful Improvements in Artificial Teeth and Backing-s 'llherel'or, of which the following is a. specification.

The invention relates to an artificial tooth and hacking therefor.

The primary object of the invention is the provision of a tooth and hacking therefor wherein the artificial tooth can be readily and easily placed in position and firmly held upon the hacking, the backing being novel in form to permit the securing of the tooth Within the mouth. yet it may be interchanged when the occasion requires.

Another object of the invention is the pro vision of an artificial tooth and hacking" therefor "wherein the possibility of the dis placement of the tooth upon, the hacking is eliminated, and maximum strength is had both in the backing: and the tooth.

A still further object of the invention the provision oi an zn'tilicaal tooth and haole ing there or wherein the said tooth. has two ground ll surfaces at right angles to each other andalso a pair of triangular openings for accmnlriodating' a right angled metallic hacking which is formed with a tongue diverging from the uu eting' of the right angles and. shaped to engage in the openings for the interelniageahle mountingof the tooth upon the hacking.

A still further object of the invention is the provision of an artificial tooth and hacle ing therefor which are simple in, construction, thoroughly reliable and eiliricnt, strong. duralile, and inexpensivi in manufacture.

ll ith these and other objects in. View, the in i'ention consists in the COI'IStIUCtlOIl, oo1nhination and arrangement of parts as will be hereinafter fully described, illustrated in the accompanying drawing, and pointed out in the claim hereunto appended.

In the drawing :F igure 1 is a side elevation of an artificial tooth and hacking therefor constructed in accordance with the invention. Fig. 2 1s a vertical longitudinal sectional view thereof. Fig. 3 is a perspeotire view oi" the hacking with the tooth removed. llig. lis a. perspective View of the tooth removed from the hacking. Fig. 5 is a side elevation of a slightly modified form of tooth and hacking. Fig. 6 is a longitudinal sectional \"lGW thereof. Fig. l a per-- 5; .iire view of the tooth removed from the liai'rlqi'ng.

Similar rel'ercnce rharacters indicate cor rrs oruling parts throughout the several \"le'A'VS ll'l the drawing.

lleferriug to the drawing in detail, A designates an. artificial tooth which is ground to form flat surfaces 10 and 11, respectively, at substantially right angles to each other. while opposite. sides of the said tooth are formed with suliistantially triangular shaped openings 12 whereby the tooth can he interchangeably fitted upon the hacking hereinafter fully described. r.

. The hacking comprises a right angled shaped plate 13-, preferably made from platinoid, platinum, gold, or a combination of gold and platimin and from the meeting angle of this plate 13 diverges a tongue 1 which is cut to provide a V-shaped op ning 15 therein forming-pointed spurs or tips 16 which are adapted to engagev in the triangular shaped openings 12 Formed in the sides of the tooth A for the interchangeable connection thereof with the haelrin It is of course understood that the tooth is made from prooelain and is readily interchangeahle so that it is adaptable for crown and bridge work, the flat surfaces 10 and 11 of the tooth being designed to rest against the angular portions of the plate constituting the hacking therefor.

In Figs 5, ll and 7 there is shown a slight modification of tooth B which. is

ground to form the Hat surfaces 17 and 18,

respectively, at right angles to each other, and also out to provide the triangular shaped openings 19 in opposite sides thereof to receive the spurs 20 which diverge from the meeting; of the right angles of the backing for supporting the said tooth, the spurs 20 hein r disposed at a different angle from the angle of the tongue 14 hereinbefore described.

From the foregoing descripti0n,.taken in connection. with theaccompanying drawing,

the construction of thedevioe will he clearly An artificial tooth and hacking therefor comprising a tooth having a cut away portion formed \lllll flat surfaces at -r1ght angles to each other and also .having'trr' cut away portions of the tooth and at alcli in presence 0 two Witnesses. k an l'e thereto ,and a right ended shape v e T 9 pla feconstitu ting backing arfdhaving a HABRX LUUENLHALL' -tongue diverging from the meeting. of the VVi'tlms'ses: V x U rlght 'angles and cut to provide spurs en- E. G. Snlnnn'r, 'gageable in the openlngs in said tooth. 'J. HARRY PARSONS.

'ang u'lar openings atthe meeting of the two In teetilnon whereof I aflix my signature 

